What am I?

Swifter than the fastest horse, through four rooms I run my course. I appear crimson in the light, but blue is what I am at night. What am I?

You can see nothing else when you look in my face, I will look you in the eye and I will never lie. What am I?

When you throw rocks on me I wont die when you pour water on me I will die

I have two bodies joined together as one. When standing still, i run and run

Riddles and Answers